Smoke-consumer.



N0. 642J2fi. Patented Jan. 30, I900. J. JACKSON.

SMOKE CONSUMER.

I (Application filed Oct. 29, 1898.) No Mouel.) 2 Sheets-8heet I.

I ifl es 5 Q S. *ZZO. g1??? ma uonms PEFERS co, PHOTO-HUNG" wnsmumou. 0cv No. 642MB. Patented Jan. 30, I900. J. JACKSON.

SMOKE CONSUMER.

(Application filed Get. 29, 18984 wz'zriwasses ,Inu 7140/ THE NewsPETERS co, PHOTO-LITHQ, WASHINGTON. o. n

ilnrrr JOSEPH JACKSON, OF CHICAGO, ILLINOIS.

SMOKE-CONSUMER.

QPECIFICATIUN forming part of Letters Patent No. 642,126, dated January30, 1900. Application filed October 29, 1898. Serial No 694,919. (Nomodel.)

To (0 whom Til/(Ly concern:

Be it known that I, JOSEPH JACKSON, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Smoke'Consurners, ofwhich the following is a specification.

My invention relates to certain improvements in smoke'consumers whereina jet of steam carrying a current of air is mixed therewith and injectedinto the furnace at a suitable distance above the grate-surface, therebycommingling heated air and steam with the products of combustion' atsuch points that the complete combustion of the gases may be eii'ectedin an economical and thorough manner.

Figure 1 is a longitudinal section of a horizontal tubular boiler ofordinary construction set in brickwork; Fig. 2, an end elevation, partlyin section; Fig. 3, a horizontal section in line X X of Fig. 1, showingthe furnace only; Fig. i, a transverse sectional elevation in line 3 yof Fig. 1; Fig. 5, an enlarged plan in detail of the steam, exhaust, andnozzle supply pipes and their connections; Fig. 6, an enlarged sectionaldetail of the nozzle, valve fitted thereon, and sleeve into which thenozzle projects; and Fig. 7 is a vertical transverse section through anintermediate brick furnace-wall with the air and steam nozzleconnections leading to both adjoining furnaces.

I have illustrated and will now describe my invention as applied to anordinary horizontal tubular boiler; but it will be understood that itmay also be applied in like manner to vertical, locomotive, and marineboilers and steam-generating furnaces of various types.

As shown in Figs. 1, 2, and 3, the boilerA is set in walls 13, of brick,in a well-known manner, provided with a furnace O, gratebars D, afire-bridge E, and having a flue F leading to the open tubular end ofthe boiler.

The side walls l3 and B are perforated, respectively, each to receivethimbles Gr, placed at suitable distances from each other uponan'ascending line slightly above the fire-surface between the furnace-doorand fire-bridge, thus providing clear openings through which nozzles IIlead from a nozzle supply-pipe I, one end of which is con nected to alive-steam pipe K, leading to the steam-dome A, and the other end ofsaid supply-pipe being connected by a T connection Z to an exhaust-steampipe L, leading directly to the exhaust-port of an engine, the Tconnection Z being also fitted with an exhaust-overflow pipe L, leadingat right angles from the exhaust-steam pipe L, thus conducting theexhaust-steam primarily to the nozzles when there is an inducing-draftin the furnace and allowing it to escape when not thus controlledthrough the overflow-pipe L to the atmosphere.

The live-steam pipe K has a steam-cock K, by means of which the steammay be first let into the nozzles from the boiler until the fires arewell under Way and the engine is running and then turned off and theexhauststeam admitted through the stop-cock Z from exhaust-steam pipeto'the nozzle supply-pipe, thus economizing steam by employing theexhaust to both heat and inject the air through the thimbles G into thefurnace, it being known that cold air alone admitted into the furnace tocommingle with the heated gases will cool them below the degree oftemperature for complete oxidation.

The open outer end of the thimble G is fitted with a disk damper M,perforated centrally to fit and slide longitudinally on the nozzle, asshown by enlarged detail in Fig. 6, the ends of the said thimbles beingthus adapted to be left entirely open, entirely closed, or partlyclosed.

When two or more boilers are set in brickwork benches having interveningwalls B a longitudinal air-conduit pipe G is placed centrally thereinand inclined rearwardly at an elevation slightly above the fire-surface,and lateral thimbles leading therefrom extend into the inner sides ofthe two adjacent furnaces.

A steam-supply pipe I and a suitable number of nozzles, one for eachthimble, pass from said supply-pipe partly through the thimbles, anair-space being left around the steam-supply pipe and nozzles to admitair into the furnace by means of the steam-jets issuing from thenozzles, which induce the has air-draft, warm the air, commingle the airwith the steam, and force the mixture into the furnace above thefire-surface and at points suitable to supply the products of combustionwith suitable gases at a temperature best adapted for completeoxidation.

In operation when the fires have been lighted and steam generated in theboilers the steam-cock K is opened sufficiently to start the air andsteam into the sides of the furnace through the thimbles' and nozzles,which operation is continued, the damper being adjusted on the nozzlesto regulate the proportion and amount of air and steam admitted to thefurnace, until the engines are well under way, after which the livesteam is either wholly or partly shut 0E and the exhauststeam isadmitted by opening the exhaust stop-cock I, which allows theexhaust-steam to find the most direct vent stimulated by the draft fromthe furnace to the stack through the nozzles, thus drawing and mixingwith it the air which surrounds the nozzles and within the sleeves.

My invention is especially adapted to boilers set in brickwork, as thethimbles may be fitted therein in a simple and inexpensive way, althoughthe thimbles may be secured in a well-known manner, as shown in Fig. 6,by expanding and turning theiredges g through holes cut in the plates aa of the water-leg a of a metal-plate boiler-casing.

The exhaust-steam may be checked in the overflow-pipe L by means of asteam-pressure-regulating valve N, fitted thereon, as shown in Fig. 5,which will force the exhaust along the outside of the side walls of theturnace, nozzles thereon projecting partly into the said thimbles, astop-valve to open and close said pipes, an exhaust-steam pipe leadingfrom the exhaust-port of the engine to the said longitudinal steam-pipesand a stop-valve to close said exhaust-steam pipe, a dischargepipeleading from the exhaust-steam pipe and a pressure-regulating valvetherein substantially as described.

2. In a double-shell boiler-furnace set in brickwork the combinationwith the dividing f u rnace-Wall, of an air-supply pipe placedlongitudinally therein above the fire-surface of lateral thimblesleading from said pipe on each side directly to the interior of thefurnace, of a steam-pipe located axially in said air-supply pipe andnozzles leading from each side thereof and located to pass axially intosaid lateral thimbles to the middle part thereof, substantially asdescribed.

JOSEPH JACKSON.

Witnesses:

WM. I-I. ROWE, W. G. ATCHISON.

